The ABC show Once Upon A Time teased during its season finale on May 11th that Queen Elsa will be joining their cast of fairy tale characters. (Disney owns ABC, in case you were wondering how they were getting away with that.)

The big reveal comes at the height of Frozen's popularity. After a successful box office run of $1.2 billion worldwide and two Academy Awards, Elsa's arrival in Once Upon A Time's sleepy Maine town can only mean more excitement and anticipation for the ABC show's fourth season.

As for the Ice Queen's unsuspected arrival? Fans who are familiar with the series have the Wicked Witch of the West to thank for that. The time portal that was left after her demise also appears to be a portal to Arendelle.

With characters like a reformed evil queen and a outlaw Snow White, Once Upon a Timecontinually has challenged the typical fairy tale tropes — so there's no telling whether Elsa brings good tidings.